1. The quality of common problems: (1) Brightness of tube surface is not enough, dark color, the color of titanium tube surface are difference. (2) Integral rigidity of handrails is not enough, It will have trembling feeling with the hand slap handrails. (3) Balustrade post are not vertical, they arranged in different straight line, will shaking and aren’t strong. (4) The corner of railing are not smooth (5) There is a gap in the pipe connection. (6) The arc of circular handrail is not smooth, with split edges. (7) The weld seam of tube wall was worn, the degree of polishing is not enough. (8) Scratches and pits in surface.

2. Preventive measures: (1) The first choice of quality conformance tube. Because of different grades of tube with different elements, even they were titanized in the same factory, the surface color of finished product also have difference, so should pay attention to the selection of the same category and grades Stainless steel tubeand should strengthen the quality management in titanizing process. (2) If the selection of the tube wall is too thin, the integral strength will insufficient, so should use the tube of wall thickness is greater than or equal to 1.2 mm to make asrailing. Tube diameter cannot be too small, when the length of line segment is too longer, the design of balustrade post should have stabilize measures at the side. (3) Snapline Inaccuracy, the installation method is not appropriate. Must be snapped line precise when construction, first use the horizontal ruler to correct both ends of the benchmark balustrade post and fixed, and then pull the line to positioning according to the each balustrade post to fixed them. It should be strengthened the inspection of embedded parts before welding and the Buried rod that found the problem should be fixed. It should be avoided that the expansion bolts which fixed base of post are too short, or the cement mortar layer under the decorated stone is not full. We should strengthen the quality inspection of each construction process in order to correct the quality problems in a timely manner. (4) Processing technology is not high. It should be used in right angle elbow, non-standard angle elbow of professional factory production, according to construction lofting drawing for specialized processing, the plants should have dedicated production equipment. (5) It should be full of welding, to use a lined casing is best. (6) Should be use the appropriate thickness of the pipe, It is better to add liner casting pipe when butt welding, due to the choice of wall thickness of tube is too thin, in the processing of elbow prone to concave and the tube is not round, There is no liner casing pipe when butt welding. So that, it is easy to drum up one end of the tube wall when smooth seam after welding. (7) Improper protection of the finished product, Reasonable arrangements for the construction process, to avoid objects collided, scratched by the cross operation, the Handrail installation on later. To protect and isolate the finished handrails, to prevent foreign body collision and scratches.

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